NTN - Large Bearings

Four Row Tapered Roller Bearings
C2
r
r1
B2
D
d
d 304.800355mm
Boundary dimensions
Basic load ratings
dynamic static dynamic static
mm kN kgf
d D B 2 C 2 r s min
1
r ls min
1
C r C or C r C or
304.800
304.902
305.003
310
317.500
320
327
330
330.200
333.375
340
341.312
342.900
343.052
346.075
347.662
495.300 342.900 349.250 6.4 3.3 3,650 9,400 370,000 960,000
412.648 266.700 266.700 3.3 3.3 2,610 7,450 267,000 760,000
438.048 280.990 279.400 4.8 3.3 2,630 6,900 268,000 700,000
430 310 310 4 2.2 2,880 8,100 294,000 825,000
430 310 310 5.5 2.2 3,050 8,600 310,000 875,000
422.275 269.875 269.875 3.3 1.5 2,260 7,050 231,000 715,000
447.675 327.025 327.025 3.3 3.3 3,400 9,550 345,000 995,000
460 338 338 4 5 2,940 8,650 300,000 880,000
445 230 230 4 2 2,150 5,650 219,000 575,000
470 340 340 2.5 2.5 3,150 10,200 320,000 1,040,000
510 340 340 6 6 3,900 9,650 395,000 985,000
482.600 306.388 311.150 3.3 1.5 2,810 7,900 287,000 805,000
533.400 254.000 254.000 6 6 3,200 6,750 330,000 690,000
469.900 342.900 342.900 3.3 3.3 4,000 11,000 405,000 1,130,000
480 350 350 5 6 3,450 10,400 350,000 1,060,000
520 278 278 5 6 3,250 7,500 330,000 765,000
457.098 254.000 254.000 3.3 1.5 2,370 6,900 241,000 705,000
533.400 307.985 301.625 3.3 3.3 3,150 6,900 320,000 705,000
457.098 254.000 254.000 3.3 1.5 2,370 6,900 241,000 705,000
457.098 254.000 254.000 3.3 1.5 2,430 6,750 248,000 685,000
488.950 358.775 358.775 3.3 3.3 4,350 12,800 445,000 1,300,000
469.900 292.100 292.100 3.3 3.3 3,200 9,100 325,000 925,000
355 490 316 316 3.3 1.5 3,500 10,000 355,000 1,020,000
1 Minimum allowable dimension for chamfer dimension r or r1.
B-188